Bosch Refrigerator Error Code E2003

E2003 indicates a CRC parameter set error associated with the IW210 icemaker module. The refrigerator's control system performs a cyclic redundancy check on the icemaker's stored configuration data and has detected that the data is corrupted or invalid. This typically causes the icemaker to stop functioning until the issue is corrected.

Start by unplugging the refrigerator for several minutes and restoring power to see if the error clears. If E2003 returns, inspect the wiring harness and connectors leading to the icemaker for damage or corrosion. If the wiring is intact, the IW210 icemaker module itself likely needs to be replaced, and in some cases the main control board may also need evaluation.

Repair costs depend on the root cause. If only the IW210 icemaker module needs replacement, parts and labor typically range from around $150 to $350. If the main control board is also involved, total costs can be higher, often in the $250 to $500 range depending on parts pricing and local labor rates. Getting a professional diagnosis first can help avoid replacing parts unnecessarily.

A power reset may temporarily clear the error if it was caused by a one-time power interruption, but if the icemaker module's memory is genuinely corrupted, the error will return after the control system re-runs its CRC check. A reset is worth attempting as a first step, but a persistent E2003 usually requires component-level diagnosis or replacement.

The E2003 error is specific to the icemaker module and does not directly affect the refrigerator's cooling or food preservation functions. The refrigerator compartment and freezer should continue operating normally. However, the icemaker will likely be non-functional until the error is resolved, so you should plan to use an alternative ice source in the meantime.